20211269320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1997161}}^1$

素因数の和:1997206

約数の個数: 64

約数和(自身を含む): 51766439040

約数和(自身を除く): 31555169720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 23, 40, 44, 46, 55, 88, 92, 110, 115, 184, 220, 230, 253, 440, 460, 506, 920, 1012, 1265, 2024, 2530, 5060, 10120, 1997161, 3994322, 7988644, 9985805, 15977288, 19971610, 21968771, 39943220, 43937542, 45934703, 79886440, 87875084, 91869406, 109843855, 175750168, 183738812, 219687710, 229673515, 367477624, 439375420, 459347030, 505281733, 878750840, 918694060, 1010563466, 1837388120, 2021126932, 2526408665, 4042253864, 5052817330, 10105634660, 20211269320]

約数ペア:

[(1, 20211269320), (2, 10105634660), (4, 5052817330), (5, 4042253864), (8, 2526408665), (10, 2021126932), (11, 1837388120), (20, 1010563466), (22, 918694060), (23, 878750840), (40, 505281733), (44, 459347030), (46, 439375420), (55, 367477624), (88, 229673515), (92, 219687710), (110, 183738812), (115, 175750168), (184, 109843855), (220, 91869406), (230, 87875084), (253, 79886440), (440, 45934703), (460, 43937542), (506, 39943220), (920, 21968771), (1012, 19971610), (1265, 15977288), (2024, 9985805), (2530, 7988644), (5060, 3994322), (10120, 1997161)]